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Forest change estimates for the northern Petén region of Guatemala — 1986–1990

Forest change estimates for the northern Petén region of Guatemala — 1986–1990 Landsat-thematic mapper images recorded April 1986 and 1990 were obtained for northern Guatemala. The study area corresponds to a major portion of Guatemala's Maya Biosphere reserve but also includes land outside the western and southern boundary of the reserve. The normalized difference vegetation index (NDVI) was computed at each date and image differencing (subtraction) was performed. The resulting image was thresholded into three categories: regrowth, no change, and forest clearing. A 10×10 km grid system was superimposed on the image to categorize the percentage of each 100 km2 cell that changed between 1986 and 1990. Forest clearing patterns were apparent along the border areas (Mexico and Guatemala) and all along the southern portion of the study area where human populations were moving toward the Maya Biosphere borders, along existing roads. Forest clearing was negligible or absent in the roadless areas. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human Ecology Springer Journals

Forest change estimates for the northern Petén region of Guatemala — 1986–1990

Human Ecology , Volume 22 (3) – Aug 30, 2005

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References (20)

Publisher
Springer Journals
Copyright
Copyright
Subject
Social Sciences; Anthropology; Environmental Management; Geography, general; Sociology, general
ISSN
0300-7839
eISSN
1572-9915
DOI
10.1007/BF02168855
Publisher site
See Article on Publisher Site

Abstract

Landsat-thematic mapper images recorded April 1986 and 1990 were obtained for northern Guatemala. The study area corresponds to a major portion of Guatemala's Maya Biosphere reserve but also includes land outside the western and southern boundary of the reserve. The normalized difference vegetation index (NDVI) was computed at each date and image differencing (subtraction) was performed. The resulting image was thresholded into three categories: regrowth, no change, and forest clearing. A 10×10 km grid system was superimposed on the image to categorize the percentage of each 100 km2 cell that changed between 1986 and 1990. Forest clearing patterns were apparent along the border areas (Mexico and Guatemala) and all along the southern portion of the study area where human populations were moving toward the Maya Biosphere borders, along existing roads. Forest clearing was negligible or absent in the roadless areas.

Journal

Human EcologySpringer Journals

Published: Aug 30, 2005

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